ti - microalloyed steel, quenched from hot forging temperature

the aim of the paper presented here is to develop the ti - micralloyed steel in otrer to oprtmize the mechanical properties after direct quenching from hot forging temperature. for this purpose, seven melts containing various amounts of titanium were prepared and cast in metal and sand molds. from the ingots, cast in metal mould, tractor links were produced by hot forging. the produced links were direct quenched from forging temperature and then temperd to obtaine the optimum microstructure and mechanical properties. the results obtained from tensile, impact and hardness tests along with the optical and scanning electron microscopy examination showed that the optimum microstructure and thus the optimum mechanical properties belong to 0.01 wt% titanium-microalloyed steel.